Description

The addch() function writes a character to the stdscr window at
the current cursor position. The mvaddch() and mvwaddch() functions write the
character to the position indicated by the x (column) and y (row)
parameters. The mvaddch() function writes the character to the stdscr window,
while mvwaddch() writes the character to the window specified by win.
The waddch() function is identical to addch(), but writes the character to
the window specified by win.

These functions advance the cursor after writing the character. Characters that do
not fit on the end of the current line are wrapped to
the beginning of the next line unless the current line is the
last line of the window and scrolling is disabled. In
that situation, characters which extend beyond the end of the line are discarded.

When ch is a backspace, carriage return, newline, or tab, X/Open Curses
moves the cursor appropriately. Each tab character moves the cursor to the
next tab stop. By default, tab stops occur every eight columns. When
ch is a control character other than backspace, carriage return, newline, or
tab, it is written using ^x notation, where x is a
printable character. When X/Open Curses writes ch to the last character
position on a line, it automatically generates a newline. When ch is written
to the last character position of a scrolling region and scrollok() is
enabled, X/Open Curses scrolls the scrolling region up one line (see
clearok(3XCURSES)).

Parameters

wchstr

Is a pointer to the cchar_t string to be copied to the window.

n

Is the maximum number of characters to be copied from wchstr. If n is less than 0, the entire string is written or as much of it as fits on the line.

y

Is the y (row) coordinate of the starting position of wchstr in the window.

x

Is the x (column) coordinate of the starting position of wchstr in the window.